<!-- place under the <system.web> node-->
<webServices>
    <wsdlHelpGenerator href="denied.aspx" />
    <protocols>
       <remove name="HttpGet" />
       <remove name="HttpPost" />
    </protocols>
</webServices>

using System;
using System.Collections.Generic;
using System.Text;
using System.Globalization;
 
namespace Security
{
    /// <summary>
    /// Person Id
    /// </summary>

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Security;
using System.Security.Permissions;
using System.IO;
using System.Security.Policy;

StrongName sn = typeof(Program).Assembly.Evidence.GetHostEvidence<StrongName>();

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security;
using System.Security.Permissions;
 
[assembly: AllowPartiallyTrustedCallers]
[assembly: SecurityRules(SecurityRuleSet.Level2)]
namespace TransparentSecurity

using System;
using System.Security.Cryptography;
 
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string PlainText = "Luciano Evaristo Guerche";

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
  xmlns:beans="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
              http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.4.xsd"> 
    <http auto-config='true'>
        <intercept-url pattern="/**" access="ROLE_USER" />
    </http>
    <authentication-provider>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
    <display-name>toclasaas</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>

--خط زیر را اول تعریف متود مورد نظر قرار دهید
--با تشکر از مسعود
[PrincipalPermission(SecurityAction.Demand, Role = "SomeRole")]